Re: pg_dump & performance degradation

At 05:28 29/07/00 -0700, Don Baccus wrote:
>At 02:14 PM 7/29/00 +1000, Philip Warner wrote:
>
>>>(AFAIR no one's ever asked for this before, so...)
>>
>>like most of these things (at least for me), it is personally relevant: I
>>also experience severe peformance degradation during backups.
>
>I can't think of any Unix utility that does this, offhand.
>
>"nice" doesn't help at all when you try it?

Only marginally; and what I really need to do is 'nice' the backend, and
when I do that it still only helps only a little - even if I drop it to the
lowest priority. I think a process with only a little CPU can still do a
lot of I/O requests, and perhaps it is getting swapped back in to service
the requests. This is just guesswork.




----------------------------------------------------------------
Philip Warner                    |     __---_____
Albatross Consulting Pty. Ltd.   |----/       -  \
(A.C.N. 008 659 498)             |          /(@)   ______---_
Tel: (+61) 0500 83 82 81         |                 _________  \
Fax: (+61) 0500 83 82 82         |                 ___________ |
Http://www.rhyme.com.au          |                /           \|                                |    --________--
PGP key available upon request,  |  /
and from pgp5.ai.mit.edu:11371   |/